Improvement in grading and ditching plows



. r A 2 Sheets-Sheet 1.

SIN.. CALDWELL. GRDINGAN) DITCHING' PLOW.

No. 105,902. Patented Aug. v2,11870.

Fig. ,9.

W'messefs N. PETERS. Pham'Lixhngnpher. wnnhlngton, D. C.

STATES l SAMUEL'N. CALDWELL,` OF PILOT GROVE, ASSIGNOR-TO HIMSELF AND WILLIAM BURTON, OF NEWTON COUNTY, INDIANA.

IMPROVEMENT iN GRADING AND DITCHING crows.`

Specification Yforming part of Letters Patent No. 105.902, dated August 2, 1870.

To @ZZ whom, it may concern,.-

Be it known that I, SAMUEL N. CALDWELL, of Pilot Grove, ofthe county of Newton, State of Indiana, have invented new and useful Improvements in Flows for Grading and Ditching Purposes; andIdo hereby declare that the following is a full, clear, and exact description of theconstruction and operation of the same, reference being had to the annexed drawings, making part of this specification, in whichi Figure l is a top View of the plow. Fig. 2 is an elevation of the same, showing the mode of adjusting the rear parts of the mold-board. Fig. 3 is al longitudinal section. Fig. 4 isa mold-board, side elevation'.

a c a represent a mold-board constructedin three sections jointed together at fr' i, the front section being stationary, the middle section being united to the front section in such a manner ast-o admit of being vertically and laterally adjustedto any required grade or angle, and the rear section being so united to the middle section as to admit of being elevatcd or depressed, as may be required. These parts of the mold-board are attached to the landside by the braces It h, which are adjustable and united by hinge attachment, for the purpose of fixing the mold-board in the required position.

The mold-board may be made of steel plate or other suitable material, the front section being supported by stationary'braces, attaching it to the landside, and the middle and rear sections being lined with wood, and supported as already described.

The front section of the mold-board is made in part similar to that of an ordinary plow, but is much higher-say twenty to twenty-two inches-an'd much longer, being at the lower line about three and a half feet and at the upper line about two and a half feet.

The middle section of the mold-board is formed with an outward curve, to adapt it to the shape of the forward section of the moldboard proper. This curve gradually passes to the rear end of `the rear section of the moldboard, where it should be carried a few degrees beyond the vertical line. This portion i of the mold-board should be about sixteen inches high and thevlength of the middle section three anda half feet, and that of the rear section four and a half feet. The rear section is provided on its inner face and near the lower edge with a tongue, which is made to work within a staple placed upon the inner face of the middle section. This tongue is of sufficient length to hold the rear section in place at any point of elevation or depression which may be desired.

The landside b should be made of heavy barironsay two and a half inches by one inchand, to be in pro-portion with the mold-board herein described, should be eleven feet long; but all the parts may be made of any required size, the proportions being observed.

The beam (l and the landside-handle c are made from a single stick of timber.

The mold-board handle d is attached to the rear part 4of the front section of the moldboard by an iron standard, and to the front part of the arched standard e'under the beam.

The beam and the rear part of the landside are connected by acurvediron brace, m, which brace is made'to project about four inches below the landside. This device' is for counteracting side draft and to secure steady move` ment.

The arched standard e -rises from the landside b three and ahalf feet, and is attached to the beam on the landside and to the frontpart of the front section of the mold-board, and by the brace f to the mold-board handle d, by which arrangement great strength and durability in the plow is secured, and also comparative ease in controlling the movements of the plow.

The brace g connects the handles.

What I claim as new in a grading and ditching plow, and desi reto secure by Letters Patent, 1s-

l. An adjustable mold-board composed of three separate sections, substantially as herein shown and described, and for the purposes set forth.

2. In combination with the landside, the arched standard e, and the curved brace m, with its elongated point, as shown and described, and for the purposes set forth.

SAMUEL N. CALDWELL.

Witnesses:

P. W. HALL, WM. H. BATES. 

